While trying to find the best plug options for headers I decided to do some measuring. It is a common misconception that spark plugs create heat. The difference between them is heat range. Enhance your email experience by providing your zip code for area specific offers. Your knowledge is greatly appriciated! MSD Cross Reference with NGK Plug Type to . JavaScript is disabled. May 26, 2023 Reach, Projected Tip, Resistor, Each, 4.75 out of 5 stars ( 6 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. . NGK IRIDIUM IX Iridium Spark Plugs UR4IX 7401 Set of 4. Sorry, you're using a web browser that is no longer supported. Selecting a spark plug with the proper heat range will ensure that the tip will maintain a temperature high enough to prevent fouling, yet be cool enough to prevent pre-ignition. Thanks guys, I got the YR5's and try them at .030 gap. NGK Iridium/Platinum Heat Range 5 Spark Plug (DILFR5A11) DILFR5A11. ( 4 ), Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. the spark plug heat range only indicates the rate at which the spark plug dissipates its firing end heat to the engine. - NGK Spark Plugs WHY ARE THERE DIFFERENT HEAT RANGES? Reach, 5/8 in. I use R44S what would the NGK number be to that? NGK is an automotive parts company that was founded in 1936. My XR5's don't hit the pistons, and they work great!! USD 27.05 . ( 43 ), Estimated USA Ship Date: Estimated International Ship Date: JavaScript is disabled. The V-Power plugs also are highly durable against electrical and chemical wear, making them a long-life replacement plug. Part# NGK STK # NGK # R44T 7052 YR5 S121F 5123 DR8HS 25 6630 UR4 R44TS 2771 UR5 S121XL 2120 D8EA 25 2771 UR5 * R44TS8 6945 UR45 S122F 5123 DR8HS 25 7177 UR5IX R44TSX 2248 UR55 S123XL 7912 D7EA 26 6945 . Reach, Tapered Seat, 5/8 in. For usage in applications outside of normal use or not listed in this publication, NGK Spark Plug (Australia) Pty Ltd takes no responsibility. So can anyone give me a good part number and a decent place to buy them. The company's drive to continuously innovate itself and its products has helped the automotive industry move forward. ngk Ngk also makes a plug that crosses to the R45TS so the length or reach is the same and is shorter also, not sure the part # but any NGK parts source should have a cross reference, I know my store does that is why I started using them because they had the same reach and were short for headers. sparkplugs.com P.O. Re: NGK vs. AC Delco spark plugs. Spark Plug specification is subject to change without notice. Find an Automotive Service Professional Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. NGK V-Power Spark Plugs UR5. If you are located in the United States select "Apply" to have access to US delivery options and In-Store Pickup. You must log in or register to reply here. Discussion in 'Street/strip 400/430/455' started by GSX Tribute, Aug 2, 2012. $5 Off Your $100 Mobile App Purchase - Get the App. Because of the V-Groove, the spark occurs at the edge of the center electrode. Just went and bought some UR5s. Note: This cross-reference is a guide only and may not be suitable for all vehicles. If you need a plug with a gasket seat let me know because the numbers will be totally different. NGK has become a global brand is practically visible all over the globe. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). When a spark plug absorbs heat produced from combustion, the heat is transferred through the centre electrode and insulator nose to the metal shell, which then transfers the heat into the engine casing and circulating coolant. Crown Automotive Jeep Replacement Spark Plug for 01-06 Jeep, Dodge & Chrysler Models w/ PZEV, w/ 2.4L, 2.0L Eng. Plug Type Stock No. UR4 6630 37204 6IR4Y UR5 2771 37224 6IR5Y UR6 7773 37234 6IR6Y UR6 7773 37414 6IR6YS WR5 2438 37444 16IR5Y XR4 5858 37384 15IR4Y ZFR5D-11 4936 37284 8IR5L ZFR5E-11 4435 37284 8IR5L ZFR6F N/A 37264 7IR6L ZNAR7AIX 7554 37174 4IR7Y ZNAR7AIX 7554 37174 4IR7Y. Estimated International Ship Date: Reach, Projected Tip, Resistor, Spark Plug, Traditional, 14mm Thread, .750 in. ( 9 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. So can anyone give me a good part number and a decent place to buy them. NGK V-Power Spark Plugs UR4. Iridium (15) Nickel alloy (15) . The Accel shorty header plugs were the shortest but I didn't really like using those so here is what I was able to do at the time. Several factors influence the heat range of a spark plug, although typically the insulator nose design provides an indication of the heat range of a spark plug. ( 1 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, 26.5mm Reach, Resistor, Each, Estimated Ship Date: Here, R5671A represents the plug type and -11 represents the heat range. dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, In Stock at a Summit Racing Location. it was the only way to go. . if ordered today, Spark Plug, Standard, 14mm Thread, .500 in. Example a R5671A-7 (a good street/strip plug) is a cold plug where a R5671A-10 is a very cold plug used for large 400hp and up nitrous and other power adder applications) Autolite Heat Ranges - The larger the last digit in the part number, the hotter the plug is. May 18, 2023. ( 3 ), Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Spark Plug Reach (mm): 11.68mm Manufacturer Heat Range: 4 Shorty Spark Plug: No Resistor: Yes Electrode Tip Material: NGK-6945 UPC: 087295169452 Spark Plug Thread Size: 14mm Spark Plug Reach (in. Gap a tight .028 and turn it up. It is a common misconception that spark plugs create heat. For a better experience, please enable JavaScript in your browser before proceeding. Results 1 - 25 JOHN 1KWIKSIX Well-Known Member Nov 1, 2016 Any use of this cross reference is done at the installers risk. Box 772 Sun City, CA 92586 Toll Free Phone Number: 888-800-9629 Out of U.S. call 951-672-8501 Ships Today. NGK Spark Plug 7401 4pk Iridium IX UR4IX 14.00mm .460 Tapered STD Resistor. I always ran AC 43N sparkplugs in my L78. . I copied this from a website. Copyright 2008-2023 OReilly Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars $5 Off Your $100 Mobile App Purchase - Get the App. Is there an NGK chart I can use to cross reference AC Delco plugs to? Generally, low power engines such as lawn mowers dont produce a large amount of heat, hence use a low heat range (or hot) spark plug such as a 4 heat range. it was the only way to go. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. NGK V-Power Spark Plug UR5 (6 Pack) for PONTIAC FIERO GT 1985-1988 2.8L/173 . Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars ( 21 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .750 in. High performance engines on the other hand produce a large amount of heat, hence a high heat range (or cold) spark plug such as a 10 heat range needs to be used to resist the heat developed by the engine. On a Z28 the tip of the plug might touch the piston, if you still have domed pistons. 69 RS 355 Tremec 5-Speed 4.11's. ( 22 ), Spark Plug, V-Power, Gasket Seat, 14mm Thread, .375 in. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars http://i25.photobucket.com/albums/c99/supershifter/Picture_1581.jpg. Part# NGK STK # NGK # Comp. Engineered specifically for OE applications.Features: Other Part Numbers: Thanks! Thursday 4/20/2023 Jun 1, 2005 21,549 Scott from Hamilton, NJ. The company utilizes the industry's most advanced manufacturing facility. All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. ( 22 ), 5.0 out of 5 stars If you are an international customer and would like to change the currency that prices are displayed in, you can do so here. Nothing wrong with using a UR5(2771)plug with alky. Actual OE or equivalent replacement spark plug. They don't. the spark plug heat range only indicates the rate at which the spark plug dissipates its firing end heat to the engine. Detailed Description I have NGK UR4, and the wire for #6 is is super close to the header. Is that NGK a direct x-reference for the Autolite? Apr 16, 2007 #9 BonzoHansen Administrator. I was just wondering if the YR5s need different gapping. Lifetime Gold Member. Hex, Gasket Seat, Resistor, Projected tip, Each, Spark Plug, Gasket Seat, 14mm Thread, .691 in. The cross references are for general reference only, please check for correct specifications and measurements for your application. The only ones I had found that were shorter up to now were, as you point out, the Accell shorty plugs which I'm not really fond of either. Summit Racing will BEAT any competitor's advertised price! order I couldn't find them when I went to get my car last year so I put the equivalent Autolights in it. Reach, Projected Tip, Resistor, Each, 4.91 out of 5 stars 1; 2; Next. NGK Spark Plugs UR4 V-Power Resistor Spark Plug. Estimated International Ship Date: Go. Click here to find a ( 5 ), Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, 25mm Reach, Projected Tip, Resistor, Each, Spark Plug, Laser Iridium, Tapered Seat, 14mm Thread, .708 in. You might want to see if you can cross reference the R43 plug and see if it crosses to something other than the extended tip XR5. ( 5 ), 3.4 out of 5 stars This is a custom order part. You can depend on NGK for quality and reliability. Me, I would probably pick the UR5 or maybe even try a slightly colder UR6 to start with for extra . If you are an international customer who ships to a US address choose "United States Shipping" and we will estimate your ship dates accordingly. NGK Spark Plugs V-Power Spark Plugs offer economical performance for nearly any automotive application - and are the only plugs with NGK's V-Groove technology. Today, Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each, 5.0 out of 5 stars NGK Spark Plugs #ngk7373 Terms of Use | Privacy and Security | Site Accessibility 5 (29) 4 (14) 6 (2) Get Results; Electrode Tip Material . Set (8pcs) NGK V-Power Spark Plugs Stock 2771 Nickel Core Tip Standard 0.040in UR5 . Proposition 65. The above info appears correct. Do a search..Some recommend NGK YR5's over the UR5''s . Typically the heat range for NGK Spark Plugs varies from 2-11. Spark Plug; Plug Number: UR5; NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Do you run the XR5'S on the street or a heat range higher? USD 19.30. ( 5 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .460 in. ( 9 ), Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .691 in. Reach, Projected Tip, Resistor, Each, 4.63 out of 5 stars Hex, Projected Tip, Resistor, Each, 4.96 out of 5 stars dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive, NGK Standard Series Spark Plugs BPR4ES SOLID, NGK G-Power Platinum Spark Plugs LZTR4AGP, NGK G-Power Platinum Spark Plugs TR45-1GP. ( 2 ), 4.8 out of 5 stars USD 34.79. - Dave 1 Quote Sam (Bones) (Non-dues paying) 6.9k Location: Ortonville,Mi Legal Name: monteholic Occupation: Aviation Ground Equipment & Support Technician Posted May 19, 2012 I think the question should be.. 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Firing end heat to the engine use of This cross reference is done at the installers risk, Tapered,. Could n't find them when I went to Get my car last year so I put the Autolights! Get the App all over the globe and In-Store Pickup today, Spark specification. 'S do n't hit the pistons, and the wire for # 6 is is super close to header. Helped the automotive industry move forward misconception that Spark plugs UR4IX 7401 Set 4... You drive, in Stock at a Summit Racing Location Iridium/Platinum heat range 5 Spark,. At.030 gap is super close to the engine me a good part number and a decent to! In operation coverage reinforces NGK as the Ignition Specialist different gapping '' to have access to delivery!